Die mounting



June 10, 1941. 5, -rso DIE MOUNTING Filed Nov. 6, 1939 2 Sheets-Sheet 1 [mew afar.

June 1941- B. N. BLETSO DIE MOUNTING Filed Nov. 6, 1939 2 Sheets-Sheet 2 FIEIZL' hweizloit' BEL/CE /V.

Patented June 10, 1941 UNITED STATES PATENT OFFICE DIE MOUNTING Bruce N. Bletso, East Cleveland, Ohio Application November 6, 1939, Serial No. 303,139 7 Claims. (Cl. zosz s) This invention is an apparatus for mounting metal drawing dies, such as the dies used in the drawing of wire.

A specific example of the invention is illustrated by the accompanying drawings, in which:

Figure 1 is a top view; Figure 2 is a vertical longitudinal section taken from the line 11-11 in Figure 1, and I v Figures 3 and 4 are vertical cross sections taken from the lines III-III and IVIV, respectively,

in Figure 2.

More specifically, these drawings illustrate a die holder in the form of an elastic metal loop I in which the die 2 may be placed, levers 3 trans-,

versely extendingfrom the ends of the loop I for constricting the same about the die. Both the loop I and the levers 3 are hollow, their insides intercommunicating and the ends of the levers 3 being respectively provided with an inlet 4 and an outlet 5 through which water or other cooling fluid may be circulated through the inside of the loop I.

The die holder just described is mainly a casting, the loop and levers being integral. The casting is in the form of outwardly facing channel shapes, and a strip 6 is welded to the edges of screw l3 may be screwed, if desired. With this arrangement, the die holder can be inserted with either lever uppermost through either end of the passage l0.

the flanges of these shapes to provide the hollow loop and levers described. The casting may include fins 1 about which the cooling fluid circulates. Also the adjacent faces of the ends of the levers 3 may be provided with abutments 8 for limiting the approach of the levers in performing their function of constricting the loop I. The metal used in making this casting may be cast spring bronze.

A die box 3 serves to mount this die holder, the box 8 providing a transverse passage ill with registering openings H and I2 formed in the opposite walls of the box bounding this passage Ill.

The die holder is adapted to be slid transversely into this passage It so that the die 2 registers with the openings II and I2, the box being provided with a screw l3 which extends down into the passage I so as to engage and work the end of the upper one of the levers 3. This screw is at the outer end of the passage l0, and the surface oi. the end 01' the lever engaged by the end of this screw I3 is provided with a recess H in which the end of the screw seats, the arrangement being such that the die 2 is then properly positioned in registration with the openings II and i2.

Preferably the ends of both levers are arranged to cooperate in this fashion with the screw l3, and the box is provided with a screw hole l5 at the other end of the passage l0 into which the The opening H through the wall of the box 8 bounding the passage i0, is smaller than the loop I of the die holder, and the latter is provided with inwardly projecting lugs It 'for restraining movement of the die 2 in the direction the die holder is itself restrainedby reason of the portions of the wall of the passage i0 surrounding the opening ll. Tightness is effected by an annular screw 11 operated by a convenient handle l8, this screw being threaded through the hole [2 so as to bear against the loop I and force it against the opposite wall of the box.

Alignment of the die respecting the wire being 20 which engage the box and oppositely bear against an abutment 22 provided by a base 2|, the turntable I9 being also mounted by this base. These screws 20 may slide up and down on the abutment 22 and serve only to secure horizontal adjustment. Vertical adjustment is obtained by a screw 23, the action of which is opposed by a compression spring 24. Both the screws 20 and the screw 23 are located at sufliciently remote positions from the turntable ill to properly effect their function.

I claim: v f,

1. A die holder comprising an elastic metal loop in which the die may be placed and levers extending from the ends of said loop transversely respecting the latter for constricting the same about the die, said loop being hollow and -provided with means for circulating cooling fluid therethrough.

2. A die holder comprising an elastic etal loop in which the die may be' placed and l evers extending from the ends of said loop transversely respecting the latter for constricting the same about the die, said loop being hollow and said levers being hollow with their insides communicating with the inside of said loop, means being provided for introducing cooling fluid to said loop and for exhausting said fluid therefrom by way or said levers. I

3. The combination of a. die box having a trans verse passage with registering openings in the opposite walls bounding said passage, a die holder in the form of an elastic metal loop in which the die may be placed with levers extending from the ends said loop transversely respecting the latter for constricting the same about the die, and pressure means mounted by said box and extending into said passage so as to work said levers when said die holder box is placed in said stricting the same about the die, and pressure means mounted by said box and extending into said passage so as to work said levers when said die holder box is placed in said passage to position the die in said loop in at least approximate registration with said registering openings in said walls, said loop and said levers of said die holder being hollow and intercommunicating, and the ends of said levers being accessible from the adjacent end of said passage of said die box, said.

ends having openings for the passage oi cooling fluid.

5. The combination oi a die box having a transverse passage with registering openings in the opposite walls bounding said passage, a die holder in the form otan elastic metal loop in which the die may be placed with levers extending transversely from the ends of said loop for constricting the same about the die, and pressure means mounted by said box and extending into said passage so as to work said levers when said die holder box is placed in said passage to position the die in said loop in at least approximate registration with said registering openings in said walls, one of said openings being smaller than said die holder and the other being provided with an annular pressure member for clamping said die holder against the one of said walls of said passage having said smaller hole.

assasao 6. The combination of a die box having a transverse passage with registering openings in the opposite wall bounding said passage, a die holder in the form of an elastic metal loop in which the die may be placed with levers extending transversely from the ends of said loop for constricting the same about the die, and pressure means mounted by said box and extending into said passage so as to work said levers when said die holder box is placed in said passage to position the die in said loop in at least approximate registration with said registering openings in said walls, one of said openings being smaller than said die holder and the other being provided with an annular pressure member for clamping said die holder against the one 01' said walls of said passage having said smaller hole,said loop of said die holder having die engaging lugs positioned to restrain die movement in the direction said die holder is restrained from moving by being clamped by said annular pressure member against said one of said walls.

7. The combination of a die box having a transverse passage with registering openings in the opposite walls bounding said passage, a die holder in the iomi of an elastic metal loop in which the die may be placed with levers extending transversely from the ends of said loop for constricting the-same about the die, and pressure means mounted by said box and extending into said passage so as to work said levers when said die holder box is placed in said passage to BRUCE N. BLETSO. 

